Surgical masks

Details Surgical masks Surgical masks

1980-03-04

1982-10-26

Recla, Henry J.

Surgery

Respiratory method or device

Means for removing substance from respiratory gas

12820527, A62B 710

Patent

active

043556370

ABSTRACT:
It has already been suggested that chronic exposure of humans to nitrous oxide is a potential health hazard. There is especial concern for those working in the vicinity of a patient to whom nitrous oxide is administered as an anaesthetic. The present invention provides a disposable surgical mask characterized in that a layer comprising particles of a molecular sieve based on silicon dioxide and having an affinity for nitrous oxide is disposed between adjacent layers of the mask. Wearing such a mask reduces personal exposure to nitrous oxide.

REFERENCES:
patent: Re28102 (1974-08-01), Mayhew
patent: 2922418 (1960-01-01), Heffernan et al.
patent: 3015369 (1962-01-01), Brennan
patent: 3316904 (1967-05-01), Wall et al.
patent: 3333585 (1967-08-01), Barghini et al.
patent: 3884227 (1975-05-01), Lutz et al.
patent: 3941573 (1976-03-01), Chapel
patent: 3971373 (1976-07-01), Braun
patent: 4129424 (1978-12-01), Armond
patent: 4157375 (1979-06-01), Brown et al.
Breck, Zeolite Molecular Sieves, Structure, Chemistry, and Use, pp. 699-709.

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